Chapter 2 Mechanical Installation 15
Liebert EXM 80kVA ~ 200kVA UPS User Manual
2.5
Initial Inspection
Before installing the UPS, carry out the following inspections:
1. Ensure that the environment of the UPS equipment room meets the environmental requirement
specified in the product technical specifications, especially the ambient temperature, ventilation
conditions, and the dust situations.
2. Unpack the UPS and battery under the guidance of authorized service engineer. Visually inspect
whether the UPS and battery have any transportation damage. If there is any damage, report to the carrier
immediately.
3. Verify the UPS label and confirm the correctness of the UPS. The UPS label is attached on the back of
the door. The model, capacity and main parameters of the UPS are marked on the label.
2.6
Environmental Requirement
2.6.1
UPS Location Selection
The UPS should be located in a cool, dry, clean-air indoor environment with adequate ventilation, and
should be located on concrete or other nonflammable and flat surfaces. The ambient environment should
be free of conductive powder (such as metallic powder, sulfide, sulfur dioxide, graphite, carbon fiber,
conductive fiber, etc.), acid mist or other conductive media (strongly ionized substances). The
environment specifications should comply with relevant international standard & specifications and the
operating range (see Table 11-2) specified in this manual.
The UPS uses forced cooling by internal fans. Cooling air enters the UPS through the ventilation grills at
the front of the cabinet and exhausted through the ventilation grills at the back of the cabinet. Do not
obstruct the ventilation holes (ventilation grills). The rear of the UPS should be kept a distance at least
500mm from the wall to avoid blocking the UPS heat dissipation, thus reducing the UPS internal
temperature and improving the UPS life.
If necessary, install indoor extractor fans to aid cooling-air flow to avoid room temperature buildup. Air
filters (optional) should be used when the UPS is to operate in a dirty environment.
Note 1: When the battery cabinet is installed near the UPS, the maximum allowable ambient
temperature is dependent on the battery rather than the UPS.
Note 2: If the UPS is working in ECO mode, the power consumption will be less than that in Normal
mode. Proper air conditioning system shall be selected according to the normal operating mode.
2.6.2
Battery Location Selection
Batteries generate some amount of hydrogen and oxygen at the end of charge, so the fresh air volume of
the battery installation environment must meet the EN50272-2001 requirements.
The ambient temperature is the main factor that affects the battery capacity and life. The normal
operating temperature of the battery is 20°C. If the ambient temperature is higher than 20°C, the battery
life will be reduced. If it is lower than 20°C, the battery capacity will be reduced. In normal situation, the
allowable ambient temperature for the battery is 15°C to 25°C. The ambient temperature of the battery
shall be maintained constant, and the battery shall be kept away from heat source and air outlet.
Battery can be installed inside the specialized battery cabinet which shall be close to the UPS. If the
battery is placed on the raised floor, bracket shall be installed under the floor, just as for the UPS. If the
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